Strange pattern on model when rendered

Hi all,
Whenever I render this model, the surface looks all screwy with black lines and blocks. As far as I know, I’ve deleted all of the materials, but the same thing still happens when I render the image. I can’t figure out where this weird pattern is coming from. I’ve even tried importing the object into a new blend file, but whatever is causing this stays with the model. Any help would be much appreciated.

new spaceship5.blend (763 KB)


Select all vertices (A) and in edit mode W / remove doubles


Looks like you may have a ton of duplicated faces. Select All in Edit mode and try Remove Doubles at value = zero.

EDIT: Oh, no! it’s Quick-Draw Marklew! :wink: :smiley:

Brilliant! Not sure how those got there. Thanks!